Pneumatic or elastic wheel-tire.



G. W. BELDAM & A. U. B. RYALL.

PNEUMATIC 0R ELASTIC WHEEL TIRE.

APPLICATION FILED pcT. I9. 1914.

l 9 1: U,98%, Patented Mar. 27, 1917.

'1 mull 1/1 0M GJM LBeZdam,

GEORGE WILLIAM BELDAM, OF EALING, AND ALBERT UBIAH BENJAMIN RYALL, 01E BRENTEORD, ENGLAND.

PNEUMATIC 01R, ELASTIC WHEEL-TIRE.

Specification of Letters Patent. Patognteed Mam. 2'17, 191'? Application filed October 19, 1914. Serial No. S67E71.

' have invented new and useful-Improvements Connected with Pneumatic r Elastic Wheel-Tires, of which the following is a specification.

This invention has reference to tires and wheels, primarily or mainly, of self-pro pelled vehicles used on common roads, and wherein security bands are used inside penumatic tires for holding them in the rim, that is, in the flanges of the rim; and an object of the invention is to provide a simple and effective means of the kind referred to for holding the tires in position on wheel rims with flanges, in which the beads'of the tire cover fit, and which have to be placed in position or forced over the flanges when putting the tire on the rim.

The security band is made extensible, and in one form is composed wholly or mainly of rubber; while in another case it has one or more elastic parts arranged'in its length in such a manner that the band can be stretched, and passed over the rim flanges, and placed on the cylindrical or central portion of the rim.

The band is so constructed and arranged, that after stretching it over the rim, it will retract and fit tightly on the rim without being slack, but just a tight fit; and it is shaped at the sides or edges to lie on the so arranged as to extend wholly or partially.

through the band from the innersurface to the outer, and to be in contact with the rim,

and are adapted to conduct the heat from the interior of the tire to the rim, whence the heat is dissipated in revolving through the air.

The security band according to this invention, is illustrated in the accompanying drawings, in which Figure 1 is a transverse section of a pneumatic tirewith the security band in position.

Fig. 2 is a perspective view of a-security band detached; and Fig. 3 is a detail view to an enlarged scale of part of a band of the slightly extensible type.

In the drawings a designates the body of the band; and (l are grooves in the inner surface of it, which serve to provide spaces betweenthe rim 0. and the band, and the outer edges of which grooves come on the innerside of the band d, and serve to grip the rim better than a plain band.

The band in one construction is composed wholly or mainly of rubber, and in this and other cases is shaped at. the edges or sides to lie on the inside surfaces of the tire beads g. The band will be made endless, by joining the ends of the strip or bar of which it is made together, by canvas or' any other suitable way.

The meeting edges or margins of the sides of the band, and. of the surface on which the inner tube of the tire bears, are tapered ofl' to fine or thin edges for the purpose of providing smooth or flush unions or joins with the tire cover, and'obviating the occurrence of edges which cause friction against the inner tube, and the consequential fray- I ing of the parts.

In the construction shown in Figs. 2 and 3, the band is only slightly elastic, but can be stretched so as to be enabled to be pressed on to the rim over the flange. The. greater part'of the band in this case is inextensible, viz., the body a is the inextensible part, and is mainly of textile or like fabric or textile fabric and rubber, or other suitable material; and the extensible or elastic part b is of india rubber or analogous material or composition; and in the case shown has wedge or dovetail ends f fitting .into dovetail apertures in the ends of the inextensible part. .There may be one only, or any required number of rubber parts I).

The metal devices or pieces 0 are of rivet shape, one plate or head of which is anchored in the body a of the band, and the other comes on the surface of the band which makes contact with the metal rim e.

When the metal devices 0 are used, they will be more or less closely arranged all around the band.

In some cases,-the band may as a whole,

be slightly extensible, by making it of more or less short lengths of plies or laminae, interleaved with one another, of textile fabric, held together by rubber. solution. Thus while the band is freely extensible as a whole, or extensible at one or more parts, or slightly extensible as a whole it is al-- ways sufliciently elastic to enable it to be stretched over the flanges of the rim, and retract on to the body of the rim, and grip the same firmly; and it provides a firm or stable surface for the inner tube when it is inflated. y

In another case, the band may be made partly, or largely of ordinary soft rubber, or partly of hard rubber; the latter being inextensibln.

What is claimed is 1. The combination with a vehicle wheel rim comprising a body portion and flanges, and a removable resilient tire, of an'endless extensible security band of considerable elasticity, the said band having an interior circumference less than the circumference of the rim, the said band adapted to be stretched and passed over the said flanges, the said band retracting and gripping the middle of the body portion of the rim.

2. The combination with a vehicle wheel rim comprising a body portion and flanges, and a removable resilient tire, of an endless security band of considerable elasticity, the said band having a flat interior surface and tapering sides engaging the tire beads and rim respectively, the said band having an interior circumference less than the circumference of the rim, the said band adapted to be stretched and passed over the said flanges, the said band retracting and gripping the middle of the body portion of the mm.

3. The combination with a vehicle wheel rim comprising a body portion and flanges, and a removable resilient tire, of an endless security band, the said band composed of lengths of extensible and non-extensible material, the said band having a flat interior surface and tapering sides, the said band having an interior circumference less than the circumference of the rim, the said security band stretched and passed over the flanges of the rim and positioned between the tire beads and gripping the center of the body portion of the rim both when the tire is inflated and deflated.

4. The combination with a vehicle wheel rim comprising a body portion and flanges, and a removable tire, of an endless extensible security band, the said band having a band having transverse grooves on its flat interior surface, the said band stretched and passed over the flanges of the rim and gripping the inner surface of the body portion of the rim, the said grooves providing means for preventing circumferential movement of the said band.

5. The combination with a vehicle wheel rim comprising a body portion and flanges, and a removable tire, of an endless extensible security band the inner surface of the said band provided with metallic members engaging and gripping the body portion of the rim, the said band stretched and passed over the flanges of the rim and gripping the center of the body portion thereof between the beads of the tire.

6. The combination with a vehicle wheel rim comprising a body portion and flanges, and a resilient removable tire, of an endless extensible security band, the said band having a flat interior surface and tapering sides, metallic members carried by the flat interior surface of the band and gripping the body portion of the rim, the said band having an interior circumference less than the circumference of the rim, the said band stretched and passed over the flanges of the rim and gripping the body portion of the rim between the tire beads, the tapering sides of the band snugly fitting the said tire heads.

7. The combination with a vehicle wheel rim comprising a body portion and flanges, a resilient removable tire, of an endless extensible security band of considerable elasticity, the said band stretched and passed over the flanges of the rim and gripping the body portion of the rim between the tire beads, the said band having tapering sides to snugly fit the said tire beads, the parts arranged as and for the purpose described.

8. The combination with a vehicle wheel rim comprising a body portion and flanges, and a removable tire, of an endless extensible security band having transverse grooves on its inner surface, pieces of metal carried by the said band, between the grooves and extending from the outer to the inner surfaces of the said band, the

band being stretchable over the flanges and In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

GEORGE WILLIAM BELDAM. ALBERT URIAH BENJAMIN RYALL. Witnesses:

S. J. EARL, CHAS. J. FALooNnR. 

